液态CO2干法加砂压裂增稠剂技术现状及展望

CO2干法加砂压裂是低压、低渗透、强水敏等非常规储层高效开发的有效措施之一。系统分析了目前国内外液态CO2干法加砂压裂技术中增稠剂现状,对现有增稠剂分子结构进行分析归类, 指出了增稠剂存在的主要技术问题和开发的难点。通过对目前国内液态CO2干法压裂技术现状和现场试验情况梳理发现：国内液态CO2增稠剂技术滞后于现场应用,压裂液携砂效率低, 影响了压裂施工效果；分析国内外液态CO2增稠剂研究存在的问题,借鉴现有研究成果,依据CO2分子结构特征和理化特性,构建能使液态CO2高效增黏的新型增稠剂分子结构, 合成高质量的液态CO2增稠剂,是实现液态CO2干法加砂压裂的技术关键。在现有技术条件下, 建议将...

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Bibliographic Details
Published in石油与天然气化工 Vol. 46; no. 4; pp. 57 - 62
Main Author 王满学 何娜
Format Journal Article
LanguageChinese
Published 西安石油大学%中国石油西南油气田公司天然气研究院 2017
Subjects
压裂液
增稠剂
干法压裂
技术展望
液态CO2
技术展望
压裂液
干法压裂
增稠剂
液态CO2
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Summary:CO2干法加砂压裂是低压、低渗透、强水敏等非常规储层高效开发的有效措施之一。系统分析了目前国内外液态CO2干法加砂压裂技术中增稠剂现状,对现有增稠剂分子结构进行分析归类, 指出了增稠剂存在的主要技术问题和开发的难点。通过对目前国内液态CO2干法压裂技术现状和现场试验情况梳理发现：国内液态CO2增稠剂技术滞后于现场应用,压裂液携砂效率低, 影响了压裂施工效果；分析国内外液态CO2增稠剂研究存在的问题,借鉴现有研究成果,依据CO2分子结构特征和理化特性,构建能使液态CO2高效增黏的新型增稠剂分子结构, 合成高质量的液态CO2增稠剂,是实现液态CO2干法加砂压裂的技术关键。在现有技术条件下, 建议将液态CO2干法压裂技术与常规无水压裂技术结合,既发挥了液态CO2干法压裂技术优势,又实现了高砂比对压裂施工技术要求,满足非常规储层压裂开发需要。
Bibliography:51-1210/TE
Liquid CO2 dry fracturing technology is one of the effective measures for the development of unconventional reservoirs such as low pressure, low permeability and strong water sensitivity. The status of thickener in liquid CO2 dry fracturing technology at home and abroad is analyzed, and the molecular structure of the existing thickener is classified. The main problems existing in thickener technology and the difficulties in development are pointed out. The present situation of liquid CO2 dry fracturing technology and the field test results show that liquid CO2 thickener technology has not kept pace with the field application, so that liquid CO2 dry fracturing technology can not achieve sand fracturing. The effects of the technology on the application of liquid CO2 enrichment are discussed. Based on the existing problems of liquid CO2 fracturing thickener at home and abroad, it is proposed to re-understand the molecular structure and physical and chemical characteristics of CO2, instead of imitating
ISSN:1007-3426
DOI:10.3969/j.issn.1007-3426.2017.04.011